// Spectrum Colorpicker v1.5.1
// https://github.com/bgrins/spectrum
// Author: Brian Grinstead
// License: MIT

(function (window, $, undefined) {
  'use strict'

  var defaultOpts = {

    // Callbacks
    beforeShow: noop,
    move: noop,
    change: noop,
    show: noop,
    hide: noop,

    // Options
    color: false,
    flat: false,
    showInput: false,
    allowEmpty: false,
    showButtons: true,
    clickoutFiresChange: false,
    showInitial: false,
    showPalette: false,
    showPaletteOnly: false,
    hideAfterPaletteSelect: false,
    togglePaletteOnly: false,
    showSelectionPalette: true,
    localStorageKey: false,
    appendTo: 'body',
    maxSelectionSize: 7,
    cancelText: 'cancel',
    chooseText: 'choose',
    togglePaletteMoreText: 'more',
    togglePaletteLessText: 'less',
    clearText: 'Clear Color Selection',
    noColorSelectedText: 'No Color Selected',
    preferredFormat: false,
    className: '', // Deprecated - use containerClassName and replacerClassName instead.
    containerClassName: '',
    replacerClassName: '',
    showAlpha: false,
    theme: 'sp-light',
    palette: [['#ffffff', '#000000', '#ff0000', '#ff8000', '#ffff00', '#008000', '#0000ff', '#4b0082', '#9400d3']],
    selectionPalette: [],
    disabled: false
  }
  var spectrums = []
  var IE = !!/msie/i.exec(window.navigator.userAgent)
  var rgbaSupport = (function () {
    function contains (str, substr) {
      return !!~('' + str).indexOf(substr)
    }

    var elem = document.createElement('div')
    var style = elem.style
    style.cssText = 'background-color:rgba(0,0,0,.5)'
    return contains(style.backgroundColor, 'rgba') || contains(style.backgroundColor, 'hsla')
  })()
  var inputTypeColorSupport = (function () {
    var colorInput = $("<input type='color' value='!' />")[0]
    return colorInput.type === 'color' && colorInput.value !== '!'
  })()
  var replaceInput = [
    "<div class='sp-replacer'>",
    "<div class='sp-preview'><div class='sp-preview-inner'></div></div>",
    "<div class='sp-dd'>&#9660;</div>",
    '</div>'
  ].join('')
  var markup = (function () {
    // IE does not support gradients with multiple stops, so we need to simulate
    //  that for the rainbow slider with 8 divs that each have a single gradient
    var gradientFix = ''
    if (IE) {
      for (var i = 1; i <= 6; i++) {
        gradientFix += "<div class='sp-" + i + "'></div>"
      }
    }

    return [
      "<div class='sp-container sp-hidden'>",
      "<div class='sp-palette-container'>",
      "<div class='sp-palette sp-thumb sp-cf'></div>",
      "<div class='sp-palette-button-container sp-cf'>",
      "<button type='button' class='sp-palette-toggle'></button>",
      '</div>',
      '</div>',
      "<div class='sp-picker-container'>",
      "<div class='sp-top sp-cf'>",
      "<div class='sp-fill'></div>",
      "<div class='sp-top-inner'>",
      "<div class='sp-color'>",
      "<div class='sp-sat'>",
      "<div class='sp-val'>",
      "<div class='sp-dragger'></div>",
      '</div>',
      '</div>',
      '</div>',
      "<div class='sp-clear sp-clear-display'>",
      '</div>',
      "<div class='sp-hue'>",
      "<div class='sp-slider'></div>",
      gradientFix,
      '</div>',
      '</div>',
      "<div class='sp-alpha'><div class='sp-alpha-inner'><div class='sp-alpha-handle'></div></div></div>",
      '</div>',
      "<div class='sp-input-container sp-cf'>",
      "<input class='sp-input' type='text' spellcheck='false'  />",
      '</div>',
      "<div class='sp-initial sp-thumb sp-cf'></div>",
      "<div class='sp-button-container sp-cf'>",
      "<a class='sp-cancel' href='#'></a>",
      "<button type='button' class='sp-choose'></button>",
      '</div>',
      '</div>',
      '</div>'
    ].join('')
  })()

  function paletteTemplate (p, color, className, opts) {
    var html = []
    for (var i = 0; i < p.length; i++) {
      var current = p[i]
      if (current) {
        var tiny = tinycolor(current)
        var c = tiny.toHsl().l < 0.5 ? 'sp-thumb-el sp-thumb-dark' : 'sp-thumb-el sp-thumb-light'
        c += (tinycolor.equals(color, current)) ? ' sp-thumb-active' : ''
        var formattedString = tiny.toString(opts.preferredFormat || 'rgb')
        var swatchStyle = rgbaSupport ? ('background-color:' + tiny.toRgbString()) : 'filter:' + tiny.toFilter()
        html.push('<span title="' + formattedString + '" data-color="' + tiny.toRgbString() + '" class="' + c + '"><span class="sp-thumb-inner" style="' + swatchStyle + ';" /></span>')
      } else {
        var cls = 'sp-clear-display'
        html.push($('<div />')
          .append($('<span data-color="" style="background-color:transparent;" class="' + cls + '"></span>')
            .attr('title', opts.noColorSelectedText)
          )
          .html()
        )
      }
    }
    return "<div class='sp-cf " + className + "'>" + html.join('') + '</div>'
  }

  function hideAll () {
    for (var i = 0; i < spectrums.length; i++) {
      if (spectrums[i]) {
        spectrums[i].hide()
      }
    }
  }

  function instanceOptions (o, callbackContext) {
    var opts = $.extend({}, defaultOpts, o)
    opts.callbacks = {
      move: bind(opts.move, callbackContext),
      change: bind(opts.change, callbackContext),
      show: bind(opts.show, callbackContext),
      hide: bind(opts.hide, callbackContext),
      beforeShow: bind(opts.beforeShow, callbackContext)
    }

    return opts
  }

  function spectrum (element, o) {
    var opts = instanceOptions(o, element)
    var flat = opts.flat
    var showSelectionPalette = opts.showSelectionPalette
    var localStorageKey = opts.localStorageKey
    var theme = opts.theme
    var callbacks = opts.callbacks
    var resize = throttle(reflow, 10)
    var visible = false
    var dragWidth = 0
    var dragHeight = 0
    var dragHelperHeight = 0
    var slideHeight = 0
    var slideWidth = 0
    var alphaWidth = 0
    var alphaSlideHelperWidth = 0
    var slideHelperHeight = 0
    var currentHue = 0
    var currentSaturation = 0
    var currentValue = 0
    var currentAlpha = 1
    var palette = []
    var paletteArray = []
    var paletteLookup = {}
    var selectionPalette = opts.selectionPalette.slice(0)
    var maxSelectionSize = opts.maxSelectionSize
    var draggingClass = 'sp-dragging'
    var shiftMovementDirection = null

    var doc = element.ownerDocument
    var body = doc.body
    var boundElement = $(element)
    var disabled = false
    var container = $(markup, doc).addClass(theme)
    var pickerContainer = container.find('.sp-picker-container')
    var dragger = container.find('.sp-color')
    var dragHelper = container.find('.sp-dragger')
    var slider = container.find('.sp-hue')
    var slideHelper = container.find('.sp-slider')
    var alphaSliderInner = container.find('.sp-alpha-inner')
    var alphaSlider = container.find('.sp-alpha')
    var alphaSlideHelper = container.find('.sp-alpha-handle')
    var textInput = container.find('.sp-input')
    var paletteContainer = container.find('.sp-palette')
    var initialColorContainer = container.find('.sp-initial')
    var cancelButton = container.find('.sp-cancel')
    var clearButton = container.find('.sp-clear')
    var chooseButton = container.find('.sp-choose')
    var toggleButton = container.find('.sp-palette-toggle')
    var isInput = boundElement.is('input')
    var isInputTypeColor = isInput && inputTypeColorSupport && boundElement.attr('type') === 'color'
    var shouldReplace = isInput && !flat
    var replacer = (shouldReplace) ? $(replaceInput).addClass(theme).addClass(opts.className).addClass(opts.replacerClassName) : $([])
    var offsetElement = (shouldReplace) ? replacer : boundElement
    var previewElement = replacer.find('.sp-preview-inner')
    var initialColor = opts.color || (isInput && boundElement.val())
    var colorOnShow = false
    var preferredFormat = opts.preferredFormat
    var currentPreferredFormat = preferredFormat
    var clickoutFiresChange = !opts.showButtons || opts.clickoutFiresChange
    var isEmpty = !initialColor
    var allowEmpty = opts.allowEmpty && !isInputTypeColor

    function applyOptions () {
      if (opts.showPaletteOnly) {
        opts.showPalette = true
      }

      toggleButton.text(opts.showPaletteOnly ? opts.togglePaletteMoreText : opts.togglePaletteLessText)

      if (opts.palette) {
        palette = opts.palette.slice(0)
        paletteArray = $.isArray(palette[0]) ? palette : [palette]
        paletteLookup = {}
        for (var i = 0; i < paletteArray.length; i++) {
          for (var j = 0; j < paletteArray[i].length; j++) {
            var rgb = tinycolor(paletteArray[i][j]).toRgbString()
            paletteLookup[rgb] = true
          }
        }
      }

      container.toggleClass('sp-flat', flat)
      container.toggleClass('sp-input-disabled', !opts.showInput)
      container.toggleClass('sp-alpha-enabled', opts.showAlpha)
      container.toggleClass('sp-clear-enabled', allowEmpty)
      container.toggleClass('sp-buttons-disabled', !opts.showButtons)
      container.toggleClass('sp-palette-buttons-disabled', !opts.togglePaletteOnly)
      container.toggleClass('sp-palette-disabled', !opts.showPalette)
      container.toggleClass('sp-palette-only', opts.showPaletteOnly)
      container.toggleClass('sp-initial-disabled', !opts.showInitial)
      container.addClass(opts.className).addClass(opts.containerClassName)

      reflow()
    }

    function initialize () {
      if (IE) {
        container.find('*:not(input)').attr('unselectable', 'on')
      }

      applyOptions()

      if (shouldReplace) {
        boundElement.after(replacer).hide()
      }

      if (!allowEmpty) {
        clearButton.hide()
      }

      if (flat) {
        boundElement.after(container).hide()
      } else {
        var appendTo = opts.appendTo === 'parent' ? boundElement.parent() : $(opts.appendTo)
        if (appendTo.length !== 1) {
          appendTo = $('body')
        }

        appendTo.append(container)
      }

      updateSelectionPaletteFromStorage()

      offsetElement.bind('click.spectrum touchstart.spectrum', function (e) {
        if (!disabled) {
          toggle()
        }

        e.stopPropagation()

        if (!$(e.target).is('input')) {
          e.preventDefault()
        }
      })

      if (boundElement.is(':disabled') || (opts.disabled === true)) {
        disable()
      }

      // Prevent clicks from bubbling up to document.  This would cause it to be hidden.
      container.click(stopPropagation)

      // Handle user typed input
      textInput.change(setFromTextInput)
      textInput.bind('paste', function () {
        setTimeout(setFromTextInput, 1)
      })
      textInput.keydown(function (e) { if (e.keyCode == 13) { setFromTextInput() } })

      cancelButton.text(opts.cancelText)
      cancelButton.bind('click.spectrum', function (e) {
        e.stopPropagation()
        e.preventDefault()
        revert()
        hide()
      })

      clearButton.attr('title', opts.clearText)
      clearButton.bind('click.spectrum', function (e) {
        e.stopPropagation()
        e.preventDefault()
        isEmpty = true
        move()

        if (flat) {
          // for the flat style, this is a change event
          updateOriginalInput(true)
        }
      })

      chooseButton.text(opts.chooseText)
      chooseButton.bind('click.spectrum', function (e) {
        e.stopPropagation()
        e.preventDefault()

        if (isValid()) {
          updateOriginalInput(true)
          hide()
        }
      })

      toggleButton.text(opts.showPaletteOnly ? opts.togglePaletteMoreText : opts.togglePaletteLessText)
      toggleButton.bind('click.spectrum', function (e) {
        e.stopPropagation()
        e.preventDefault()

        opts.showPaletteOnly = !opts.showPaletteOnly

        // To make sure the Picker area is drawn on the right, next to the
        // Palette area (and not below the palette), first move the Palette
        // to the left to make space for the picker, plus 5px extra.
        // The 'applyOptions' function puts the whole container back into place
        // and takes care of the button-text and the sp-palette-only CSS class.
        if (!opts.showPaletteOnly && !flat) {
          container.css('left', '-=' + (pickerContainer.outerWidth(true) + 5))
        }
        applyOptions()
      })

      draggable(alphaSlider, function (dragX, dragY, e) {
        currentAlpha = (dragX / alphaWidth)
        isEmpty = false
        if (e.shiftKey) {
          currentAlpha = Math.round(currentAlpha * 10) / 10
        }

        move()
      }, dragStart, dragStop)

      draggable(slider, function (dragX, dragY) {
        currentHue = parseFloat(dragY / slideHeight)
        isEmpty = false
        if (!opts.showAlpha) {
          currentAlpha = 1
        }
        move()
      }, dragStart, dragStop)

      draggable(dragger, function (dragX, dragY, e) {
        // shift+drag should snap the movement to either the x or y axis.
        if (!e.shiftKey) {
          shiftMovementDirection = null
        } else if (!shiftMovementDirection) {
          var oldDragX = currentSaturation * dragWidth
          var oldDragY = dragHeight - (currentValue * dragHeight)
          var furtherFromX = Math.abs(dragX - oldDragX) > Math.abs(dragY - oldDragY)

          shiftMovementDirection = furtherFromX ? 'x' : 'y'
        }

        var setSaturation = !shiftMovementDirection || shiftMovementDirection === 'x'
        var setValue = !shiftMovementDirection || shiftMovementDirection === 'y'

        if (setSaturation) {
          currentSaturation = parseFloat(dragX / dragWidth)
        }
        if (setValue) {
          currentValue = parseFloat((dragHeight - dragY) / dragHeight)
        }

        isEmpty = false
        if (!opts.showAlpha) {
          currentAlpha = 1
        }

        move()
      }, dragStart, dragStop)

      if (initialColor) {
        set(initialColor)

        // In case color was black - update the preview UI and set the format
        // since the set function will not run (default color is black).
        updateUI()
        currentPreferredFormat = preferredFormat || tinycolor(initialColor).format

        addColorToSelectionPalette(initialColor)
      } else {
        updateUI()
      }

      if (flat) {
        show()
      }

      function paletteElementClick (e) {
        if (e.data && e.data.ignore) {
          set($(e.target).closest('.sp-thumb-el').data('color'))
          move()
        } else {
          set($(e.target).closest('.sp-thumb-el').data('color'))
          move()
          updateOriginalInput(true)
          if (opts.hideAfterPaletteSelect) {
            hide()
          }
        }

        return false
      }

      var paletteEvent = IE ? 'mousedown.spectrum' : 'click.spectrum touchstart.spectrum'
      paletteContainer.delegate('.sp-thumb-el', paletteEvent, paletteElementClick)
      initialColorContainer.delegate('.sp-thumb-el:nth-child(1)', paletteEvent, { ignore: true }, paletteElementClick)
    }

    function updateSelectionPaletteFromStorage () {
      if (localStorageKey && window.localStorage) {
        // Migrate old palettes over to new format.  May want to remove this eventually.
        try {
          var oldPalette = window.localStorage[localStorageKey].split(',#')
          if (oldPalette.length > 1) {
            delete window.localStorage[localStorageKey]
            $.each(oldPalette, function (i, c) {
              addColorToSelectionPalette(c)
            })
          }
        } catch (e) { }

        try {
          selectionPalette = window.localStorage[localStorageKey].split(';')
        } catch (e) { }
      }
    }

    function addColorToSelectionPalette (color) {
      if (showSelectionPalette) {
        var rgb = tinycolor(color).toRgbString()
        if (!paletteLookup[rgb] && $.inArray(rgb, selectionPalette) === -1) {
          selectionPalette.push(rgb)
          while (selectionPalette.length > maxSelectionSize) {
            selectionPalette.shift()
          }
        }

        if (localStorageKey && window.localStorage) {
          try {
            window.localStorage[localStorageKey] = selectionPalette.join(';')
          } catch (e) { }
        }
      }
    }

    function getUniqueSelectionPalette () {
      var unique = []
      if (opts.showPalette) {
        for (var i = 0; i < selectionPalette.length; i++) {
          var rgb = tinycolor(selectionPalette[i]).toRgbString()

          if (!paletteLookup[rgb]) {
            unique.push(selectionPalette[i])
          }
        }
      }

      return unique.reverse().slice(0, opts.maxSelectionSize)
    }

    function drawPalette () {
      var currentColor = get()

      var html = $.map(paletteArray, function (palette, i) {
        return paletteTemplate(palette, currentColor, 'sp-palette-row sp-palette-row-' + i, opts)
      })

      updateSelectionPaletteFromStorage()

      if (selectionPalette) {
        html.push(paletteTemplate(getUniqueSelectionPalette(), currentColor, 'sp-palette-row sp-palette-row-selection', opts))
      }

      paletteContainer.html(html.join(''))
    }

    function drawInitial () {
      if (opts.showInitial) {
        var initial = colorOnShow
        var current = get()
        initialColorContainer.html(paletteTemplate([initial, current], current, 'sp-palette-row-initial', opts))
      }
    }

    function dragStart () {
      if (dragHeight <= 0 || dragWidth <= 0 || slideHeight <= 0) {
        reflow()
      }
      container.addClass(draggingClass)
      shiftMovementDirection = null
      boundElement.trigger('dragstart.spectrum', [get()])
    }

    function dragStop () {
      container.removeClass(draggingClass)
      boundElement.trigger('dragstop.spectrum', [get()])
    }

    function setFromTextInput () {
      var value = textInput.val()

      if ((value === null || value === '') && allowEmpty) {
        set(null)
        updateOriginalInput(true)
      } else {
        var tiny = tinycolor(value)
        if (tiny.isValid()) {
          set(tiny)
          updateOriginalInput(true)
        } else {
          textInput.addClass('sp-validation-error')
        }
      }
    }

    function toggle () {
      if (visible) {
        hide()
      } else {
        show()
      }
    }

    function show () {
      var event = $.Event('beforeShow.spectrum')

      if (visible) {
        reflow()
        return
      }

      boundElement.trigger(event, [get()])

      if (callbacks.beforeShow(get()) === false || event.isDefaultPrevented()) {
        return
      }

      hideAll()
      visible = true

      $(doc).bind('click.spectrum', clickout)
      $(window).bind('resize.spectrum', resize)
      replacer.addClass('sp-active')
      container.removeClass('sp-hidden')

      reflow()
      updateUI()

      colorOnShow = get()

      drawInitial()
      callbacks.show(colorOnShow)
      boundElement.trigger('show.spectrum', [colorOnShow])
    }

    function clickout (e) {
      // Return on right click.
      if (e && e.type == 'click' && e.button == 2) { return }

      if (clickoutFiresChange) {
        updateOriginalInput(true)
      } else {
        revert()
      }
      hide()
    }

    function hide () {
      // Return if hiding is unnecessary
      if (!visible || flat) { return }
      visible = false

      $(doc).unbind('click.spectrum', clickout)
      $(window).unbind('resize.spectrum', resize)

      replacer.removeClass('sp-active')
      container.addClass('sp-hidden')

      callbacks.hide(get())
      boundElement.trigger('hide.spectrum', [get()])
    }

    function revert () {
      set(colorOnShow, true)
    }

    function set (color, ignoreFormatChange) {
      if (tinycolor.equals(color, get())) {
        // Update UI just in case a validation error needs
        // to be cleared.
        updateUI()
        return
      }

      var newColor, newHsv
      if (!color && allowEmpty) {
        isEmpty = true
      } else {
        isEmpty = false
        newColor = tinycolor(color)
        newHsv = newColor.toHsv()

        currentHue = (newHsv.h % 360) / 360
        currentSaturation = newHsv.s
        currentValue = newHsv.v
        currentAlpha = newHsv.a
      }
      updateUI()

      if (newColor && newColor.isValid() && !ignoreFormatChange) {
        currentPreferredFormat = preferredFormat || newColor.getFormat()
      }
    }

    function get (opts) {
      opts = opts || { }

      if (allowEmpty && isEmpty) {
        return null
      }

      return tinycolor.fromRatio({
        h: currentHue,
        s: currentSaturation,
        v: currentValue,
        a: Math.round(currentAlpha * 100) / 100
      }, { format: opts.format || currentPreferredFormat })
    }

    function isValid () {
      return !textInput.hasClass('sp-validation-error')
    }

    function move () {
      updateUI()

      callbacks.move(get())
      boundElement.trigger('move.spectrum', [get()])
    }

    function updateUI () {
      textInput.removeClass('sp-validation-error')

      updateHelperLocations()

      // Update dragger background color (gradients take care of saturation and value).
      var flatColor = tinycolor.fromRatio({ h: currentHue, s: 1, v: 1 })
      dragger.css('background-color', flatColor.toHexString())

      // Get a format that alpha will be included in (hex and names ignore alpha)
      var format = currentPreferredFormat
      if (currentAlpha < 1 && !(currentAlpha === 0 && format === 'name')) {
        if (format === 'hex' || format === 'hex3' || format === 'hex6' || format === 'name') {
          format = 'rgb'
        }
      }

      var realColor = get({ format: format })
      var displayColor = ''

      // reset background info for preview element
      previewElement.removeClass('sp-clear-display')
      previewElement.css('background-color', 'transparent')

      if (!realColor && allowEmpty) {
        // Update the replaced elements background with icon indicating no color selection
        previewElement.addClass('sp-clear-display')
      } else {
        var realHex = realColor.toHexString()
        var realRgb = realColor.toRgbString()

        // Update the replaced elements background color (with actual selected color)
        if (rgbaSupport || realColor.alpha === 1) {
          previewElement.css('background-color', realRgb)
        } else {
          previewElement.css('background-color', 'transparent')
          previewElement.css('filter', realColor.toFilter())
        }

        if (opts.showAlpha) {
          var rgb = realColor.toRgb()
          rgb.a = 0
          var realAlpha = tinycolor(rgb).toRgbString()
          var gradient = 'linear-gradient(left, ' + realAlpha + ', ' + realHex + ')'

          if (IE) {
            alphaSliderInner.css('filter', tinycolor(realAlpha).toFilter({ gradientType: 1 }, realHex))
          } else {
            alphaSliderInner.css('background', '-webkit-' + gradient)
            alphaSliderInner.css('background', '-moz-' + gradient)
            alphaSliderInner.css('background', '-ms-' + gradient)
            // Use current syntax gradient on unprefixed property.
            alphaSliderInner.css('background',
              'linear-gradient(to right, ' + realAlpha + ', ' + realHex + ')')
          }
        }

        displayColor = realColor.toString(format)
      }

      // Update the text entry input as it changes happen
      if (opts.showInput) {
        textInput.val(displayColor)
      }

      if (opts.showPalette) {
        drawPalette()
      }

      drawInitial()
    }

    function updateHelperLocations () {
      var s = currentSaturation
      var v = currentValue

      if (allowEmpty && isEmpty) {
        // if selected color is empty, hide the helpers
        alphaSlideHelper.hide()
        slideHelper.hide()
        dragHelper.hide()
      } else {
        // make sure helpers are visible
        alphaSlideHelper.show()
        slideHelper.show()
        dragHelper.show()

        // Where to show the little circle in that displays your current selected color
        var dragX = s * dragWidth
        var dragY = dragHeight - (v * dragHeight)
        dragX = Math.max(
          -dragHelperHeight,
          Math.min(dragWidth - dragHelperHeight, dragX - dragHelperHeight)
        )
        dragY = Math.max(
          -dragHelperHeight,
          Math.min(dragHeight - dragHelperHeight, dragY - dragHelperHeight)
        )
        dragHelper.css({
          top: dragY + 'px',
          left: dragX + 'px'
        })

        var alphaX = currentAlpha * alphaWidth
        alphaSlideHelper.css({
          left: (alphaX - (alphaSlideHelperWidth / 2)) + 'px'
        })

        // Where to show the bar that displays your current selected hue
        var slideY = (currentHue) * slideHeight
        slideHelper.css({
          top: (slideY - slideHelperHeight) + 'px'
        })
      }
    }

    function updateOriginalInput (fireCallback) {
      var color = get()
      var displayColor = ''
      var hasChanged = !tinycolor.equals(color, colorOnShow)

      if (color) {
        displayColor = color.toString(currentPreferredFormat)
        // Update the selection palette with the current color
        addColorToSelectionPalette(color)
      }

      if (isInput) {
        boundElement.val(displayColor)
      }

      if (fireCallback && hasChanged) {
        callbacks.change(color)
        boundElement.trigger('change', [color])
      }
    }

    function reflow () {
      dragWidth = dragger.width()
      dragHeight = dragger.height()
      dragHelperHeight = dragHelper.height()
      slideWidth = slider.width()
      slideHeight = slider.height()
      slideHelperHeight = slideHelper.height()
      alphaWidth = alphaSlider.width()
      alphaSlideHelperWidth = alphaSlideHelper.width()

      if (!flat) {
        container.css('position', 'absolute')
        container.offset(getOffset(container, offsetElement))
      }

      updateHelperLocations()

      if (opts.showPalette) {
        drawPalette()
      }

      boundElement.trigger('reflow.spectrum')
    }

    function destroy () {
      boundElement.show()
      offsetElement.unbind('click.spectrum touchstart.spectrum')
      container.remove()
      replacer.remove()
      spectrums[spect.id] = null
    }

    function option (optionName, optionValue) {
      if (optionName === undefined) {
        return $.extend({}, opts)
      }
      if (optionValue === undefined) {
        return opts[optionName]
      }

      opts[optionName] = optionValue
      applyOptions()
    }

    function enable () {
      disabled = false
      boundElement.attr('disabled', false)
      offsetElement.removeClass('sp-disabled')
    }

    function disable () {
      hide()
      disabled = true
      boundElement.attr('disabled', true)
      offsetElement.addClass('sp-disabled')
    }

    initialize()

    var spect = {
      show: show,
      hide: hide,
      toggle: toggle,
      reflow: reflow,
      option: option,
      enable: enable,
      disable: disable,
      set: function (c) {
        set(c)
        updateOriginalInput()
      },
      get: get,
      destroy: destroy,
      container: container
    }

    spect.id = spectrums.push(spect) - 1

    return spect
  }

  /**
    * checkOffset - get the offset below/above and left/right element depending on screen position
    * Thanks https://github.com/jquery/jquery-ui/blob/master/ui/jquery.ui.datepicker.js
    */
  function getOffset (picker, input) {
    var extraY = 0
    var dpWidth = picker.outerWidth()
    var dpHeight = picker.outerHeight()
    var inputHeight = input.outerHeight()
    var doc = picker[0].ownerDocument
    var docElem = doc.documentElement
    var viewWidth = docElem.clientWidth + $(doc).scrollLeft()
    var viewHeight = docElem.clientHeight + $(doc).scrollTop()
    var offset = input.offset()
    offset.top += inputHeight

    offset.left -=
            Math.min(offset.left, (offset.left + dpWidth > viewWidth && viewWidth > dpWidth)
              ? Math.abs(offset.left + dpWidth - viewWidth) : 0)

    offset.top -=
            Math.min(offset.top, ((offset.top + dpHeight > viewHeight && viewHeight > dpHeight)
              ? Math.abs(dpHeight + inputHeight - extraY) : extraY))

    return offset
  }

  /**
    * noop - do nothing
    */
  function noop () {

  }

  /**
    * stopPropagation - makes the code only doing this a little easier to read in line
    */
  function stopPropagation (e) {
    e.stopPropagation()
  }

  /**
    * Create a function bound to a given object
    * Thanks to underscore.js
    */
  function bind (func, obj) {
    var slice = Array.prototype.slice
    var args = slice.call(arguments, 2)
    return function () {
      return func.apply(obj, args.concat(slice.call(arguments)))
    }
  }

  /**
    * Lightweight drag helper.  Handles containment within the element, so that
    * when dragging, the x is within [0,element.width] and y is within [0,element.height]
    */
  function draggable (element, onmove, onstart, onstop) {
    onmove = onmove || function () { }
    onstart = onstart || function () { }
    onstop = onstop || function () { }
    var doc = document
    var dragging = false
    var offset = {}
    var maxHeight = 0
    var maxWidth = 0
    var hasTouch = ('ontouchstart' in window)

    var duringDragEvents = {}
    duringDragEvents.selectstart = prevent
    duringDragEvents.dragstart = prevent
    duringDragEvents['touchmove mousemove'] = move
    duringDragEvents['touchend mouseup'] = stop

    function prevent (e) {
      if (e.stopPropagation) {
        e.stopPropagation()
      }
      if (e.preventDefault) {
        e.preventDefault()
      }
      e.returnValue = false
    }

    function move (e) {
      if (dragging) {
        // Mouseup happened outside of window
        if (IE && doc.documentMode < 9 && !e.button) {
          return stop()
        }

        var touches = e.originalEvent.touches
        var pageX = touches ? touches[0].pageX : e.pageX
        var pageY = touches ? touches[0].pageY : e.pageY

        var dragX = Math.max(0, Math.min(pageX - offset.left, maxWidth))
        var dragY = Math.max(0, Math.min(pageY - offset.top, maxHeight))

        if (hasTouch) {
          // Stop scrolling in iOS
          prevent(e)
        }

        onmove.apply(element, [dragX, dragY, e])
      }
    }

    function start (e) {
      var rightclick = (e.which) ? (e.which == 3) : (e.button == 2)

      if (!rightclick && !dragging) {
        if (onstart.apply(element, arguments) !== false) {
          dragging = true
          maxHeight = $(element).height()
          maxWidth = $(element).width()
          offset = $(element).offset()

          $(doc).bind(duringDragEvents)
          $(doc.body).addClass('sp-dragging')

          if (!hasTouch) {
            move(e)
          }

          prevent(e)
        }
      }
    }

    function stop () {
      if (dragging) {
        $(doc).unbind(duringDragEvents)
        $(doc.body).removeClass('sp-dragging')
        onstop.apply(element, arguments)
      }
      dragging = false
    }

    $(element).bind('touchstart mousedown', start)
  }

  function throttle (func, wait, debounce) {
    var timeout
    return function () {
      var context = this; var args = arguments
      var throttler = function () {
        timeout = null
        func.apply(context, args)
      }
      if (debounce) clearTimeout(timeout)
      if (debounce || !timeout) timeout = setTimeout(throttler, wait)
    }
  }

  /**
    * Define a jQuery plugin
    */
  var dataID = 'spectrum.id'
  $.fn.spectrum = function (opts, extra) {
    if (typeof opts === 'string') {
      var returnValue = this
      var args = Array.prototype.slice.call(arguments, 1)

      this.each(function () {
        var spect = spectrums[$(this).data(dataID)]
        if (spect) {
          var method = spect[opts]
          if (!method) {
            throw new Error("Spectrum: no such method: '" + opts + "'")
          }

          if (opts == 'get') {
            returnValue = spect.get()
          } else if (opts == 'container') {
            returnValue = spect.container
          } else if (opts == 'option') {
            returnValue = spect.option.apply(spect, args)
          } else if (opts == 'destroy') {
            spect.destroy()
            $(this).removeData(dataID)
          } else {
            method.apply(spect, args)
          }
        }
      })

      return returnValue
    }

    // Initializing a new instance of spectrum
    return this.spectrum('destroy').each(function () {
      var options = $.extend({}, opts, $(this).data())
      var spect = spectrum(this, options)
      $(this).data(dataID, spect.id)
    })
  }

  $.fn.spectrum.load = true
  $.fn.spectrum.loadOpts = {}
  $.fn.spectrum.draggable = draggable
  $.fn.spectrum.defaults = defaultOpts

  $.spectrum = { }
  $.spectrum.localization = { }
  $.spectrum.palettes = { }

  $.fn.spectrum.processNativeColorInputs = function () {
    if (!inputTypeColorSupport) {
      $('input[type=color]').spectrum({
        preferredFormat: 'hex6'
      })
    }
  };

  // TinyColor v1.0.0
  // https://github.com/bgrins/TinyColor
  // Brian Grinstead, MIT License

  (function () {
    var trimLeft = /^[\s,#]+/
    var trimRight = /\s+$/
    var tinyCounter = 0
    var math = Math
    var mathRound = math.round
    var mathMin = math.min
    var mathMax = math.max
    var mathRandom = math.random

    var tinycolor = function tinycolor (color, opts) {
      color = (color) || ''
      opts = opts || { }

      // If input is already a tinycolor, return itself
      if (color instanceof tinycolor) {
        return color
      }
      // If we are called as a function, call using new instead
      if (!(this instanceof tinycolor)) {
        return new tinycolor(color, opts)
      }

      var rgb = inputToRGB(color)
      this._r = rgb.r,
      this._g = rgb.g,
      this._b = rgb.b,
      this._a = rgb.a,
      this._roundA = mathRound(100 * this._a) / 100,
      this._format = opts.format || rgb.format
      this._gradientType = opts.gradientType

      // Don't let the range of [0,255] come back in [0,1].
      // Potentially lose a little bit of precision here, but will fix issues where
      // .5 gets interpreted as half of the total, instead of half of 1
      // If it was supposed to be 128, this was already taken care of by `inputToRgb`
      if (this._r < 1) { this._r = mathRound(this._r) }
      if (this._g < 1) { this._g = mathRound(this._g) }
      if (this._b < 1) { this._b = mathRound(this._b) }

      this._ok = rgb.ok
      this._tc_id = tinyCounter++
    }

    tinycolor.prototype = {
      isDark: function () {
        return this.getBrightness() < 128
      },
      isLight: function () {
        return !this.isDark()
      },
      isValid: function () {
        return this._ok
      },
      getFormat: function () {
        return this._format
      },
      getAlpha: function () {
        return this._a
      },
      getBrightness: function () {
        var rgb = this.toRgb()
        return (rgb.r * 299 + rgb.g * 587 + rgb.b * 114) / 1000
      },
      setAlpha: function (value) {
        this._a = boundAlpha(value)
        this._roundA = mathRound(100 * this._a) / 100
        return this
      },
      toHsv: function () {
        var hsv = rgbToHsv(this._r, this._g, this._b)
        return { h: hsv.h * 360, s: hsv.s, v: hsv.v, a: this._a }
      },
      toHsvString: function () {
        var hsv = rgbToHsv(this._r, this._g, this._b)
        var h = mathRound(hsv.h * 360); var s = mathRound(hsv.s * 100); var v = mathRound(hsv.v * 100)
        return (this._a == 1)
          ? 'hsv(' + h + ', ' + s + '%, ' + v + '%)'
          : 'hsva(' + h + ', ' + s + '%, ' + v + '%, ' + this._roundA + ')'
      },
      toHsl: function () {
        var hsl = rgbToHsl(this._r, this._g, this._b)
        return { h: hsl.h * 360, s: hsl.s, l: hsl.l, a: this._a }
      },
      toHslString: function () {
        var hsl = rgbToHsl(this._r, this._g, this._b)
        var h = mathRound(hsl.h * 360); var s = mathRound(hsl.s * 100); var l = mathRound(hsl.l * 100)
        return (this._a == 1)
          ? 'hsl(' + h + ', ' + s + '%, ' + l + '%)'
          : 'hsla(' + h + ', ' + s + '%, ' + l + '%, ' + this._roundA + ')'
      },
      toHex: function (allow3Char) {
        return rgbToHex(this._r, this._g, this._b, allow3Char)
      },
      toHexString: function (allow3Char) {
        return '#' + this.toHex(allow3Char)
      },
      toHex8: function () {
        return rgbaToHex(this._r, this._g, this._b, this._a)
      },
      toHex8String: function () {
        return '#' + this.toHex8()
      },
      toRgb: function () {
        return { r: mathRound(this._r), g: mathRound(this._g), b: mathRound(this._b), a: this._a }
      },
      toRgbString: function () {
        return (this._a == 1)
          ? 'rgb(' + mathRound(this._r) + ', ' + mathRound(this._g) + ', ' + mathRound(this._b) + ')'
          : 'rgba(' + mathRound(this._r) + ', ' + mathRound(this._g) + ', ' + mathRound(this._b) + ', ' + this._roundA + ')'
      },
      toPercentageRgb: function () {
        return { r: mathRound(bound01(this._r, 255) * 100) + '%', g: mathRound(bound01(this._g, 255) * 100) + '%', b: mathRound(bound01(this._b, 255) * 100) + '%', a: this._a }
      },
      toPercentageRgbString: function () {
        return (this._a == 1)
          ? 'rgb(' + mathRound(bound01(this._r, 255) * 100) + '%, ' + mathRound(bound01(this._g, 255) * 100) + '%, ' + mathRound(bound01(this._b, 255) * 100) + '%)'
          : 'rgba(' + mathRound(bound01(this._r, 255) * 100) + '%, ' + mathRound(bound01(this._g, 255) * 100) + '%, ' + mathRound(bound01(this._b, 255) * 100) + '%, ' + this._roundA + ')'
      },
      toName: function () {
        if (this._a === 0) {
          return 'transparent'
        }

        if (this._a < 1) {
          return false
        }

        return hexNames[rgbToHex(this._r, this._g, this._b, true)] || false
      },
      toFilter: function (secondColor) {
        var hex8String = '#' + rgbaToHex(this._r, this._g, this._b, this._a)
        var secondHex8String = hex8String
        var gradientType = this._gradientType ? 'GradientType = 1, ' : ''

        if (secondColor) {
          var s = tinycolor(secondColor)
          secondHex8String = s.toHex8String()
        }

        return 'progid:DXImageTransform.Microsoft.gradient(' + gradientType + 'startColorstr=' + hex8String + ',endColorstr=' + secondHex8String + ')'
      },
      toString: function (format) {
        var formatSet = !!format
        format = format || this._format

        var formattedString = false
        var hasAlpha = this._a < 1 && this._a >= 0
        var needsAlphaFormat = !formatSet && hasAlpha && (format === 'hex' || format === 'hex6' || format === 'hex3' || format === 'name')

        if (needsAlphaFormat) {
          // Special case for "transparent", all other non-alpha formats
          // will return rgba when there is transparency.
          if (format === 'name' && this._a === 0) {
            return this.toName()
          }
          return this.toRgbString()
        }
        if (format === 'rgb') {
          formattedString = this.toRgbString()
        }
        if (format === 'prgb') {
          formattedString = this.toPercentageRgbString()
        }
        if (format === 'hex' || format === 'hex6') {
          formattedString = this.toHexString()
        }
        if (format === 'hex3') {
          formattedString = this.toHexString(true)
        }
        if (format === 'hex8') {
          formattedString = this.toHex8String()
        }
        if (format === 'name') {
          formattedString = this.toName()
        }
        if (format === 'hsl') {
          formattedString = this.toHslString()
        }
        if (format === 'hsv') {
          formattedString = this.toHsvString()
        }

        return formattedString || this.toHexString()
      },

      _applyModification: function (fn, args) {
        var color = fn.apply(null, [this].concat([].slice.call(args)))
        this._r = color._r
        this._g = color._g
        this._b = color._b
        this.setAlpha(color._a)
        return this
      },
      lighten: function () {
        return this._applyModification(lighten, arguments)
      },
      brighten: function () {
        return this._applyModification(brighten, arguments)
      },
      darken: function () {
        return this._applyModification(darken, arguments)
      },
      desaturate: function () {
        return this._applyModification(desaturate, arguments)
      },
      saturate: function () {
        return this._applyModification(saturate, arguments)
      },
      greyscale: function () {
        return this._applyModification(greyscale, arguments)
      },
      spin: function () {
        return this._applyModification(spin, arguments)
      },

      _applyCombination: function (fn, args) {
        return fn.apply(null, [this].concat([].slice.call(args)))
      },
      analogous: function () {
        return this._applyCombination(analogous, arguments)
      },
      complement: function () {
        return this._applyCombination(complement, arguments)
      },
      monochromatic: function () {
        return this._applyCombination(monochromatic, arguments)
      },
      splitcomplement: function () {
        return this._applyCombination(splitcomplement, arguments)
      },
      triad: function () {
        return this._applyCombination(triad, arguments)
      },
      tetrad: function () {
        return this._applyCombination(tetrad, arguments)
      }
    }

    // If input is an object, force 1 into "1.0" to handle ratios properly
    // String input requires "1.0" as input, so 1 will be treated as 1
    tinycolor.fromRatio = function (color, opts) {
      if (typeof color === 'object') {
        var newColor = {}
        for (var i in color) {
          if (color.hasOwnProperty(i)) {
            if (i === 'a') {
              newColor[i] = color[i]
            } else {
              newColor[i] = convertToPercentage(color[i])
            }
          }
        }
        color = newColor
      }

      return tinycolor(color, opts)
    }

    // Given a string or object, convert that input to RGB
    // Possible string inputs:
    //
    //     "red"
    //     "#f00" or "f00"
    //     "#ff0000" or "ff0000"
    //     "#ff000000" or "ff000000"
    //     "rgb 255 0 0" or "rgb (255, 0, 0)"
    //     "rgb 1.0 0 0" or "rgb (1, 0, 0)"
    //     "rgba (255, 0, 0, 1)" or "rgba 255, 0, 0, 1"
    //     "rgba (1.0, 0, 0, 1)" or "rgba 1.0, 0, 0, 1"
    //     "hsl(0, 100%, 50%)" or "hsl 0 100% 50%"
    //     "hsla(0, 100%, 50%, 1)" or "hsla 0 100% 50%, 1"
    //     "hsv(0, 100%, 100%)" or "hsv 0 100% 100%"
    //
    function inputToRGB (color) {
      var rgb = { r: 0, g: 0, b: 0 }
      var a = 1
      var ok = false
      var format = false

      if (typeof color === 'string') {
        color = stringInputToObject(color)
      }

      if (typeof color === 'object') {
        if (color.hasOwnProperty('r') && color.hasOwnProperty('g') && color.hasOwnProperty('b')) {
          rgb = rgbToRgb(color.r, color.g, color.b)
          ok = true
          format = String(color.r).substr(-1) === '%' ? 'prgb' : 'rgb'
        } else if (color.hasOwnProperty('h') && color.hasOwnProperty('s') && color.hasOwnProperty('v')) {
          color.s = convertToPercentage(color.s)
          color.v = convertToPercentage(color.v)
          rgb = hsvToRgb(color.h, color.s, color.v)
          ok = true
          format = 'hsv'
        } else if (color.hasOwnProperty('h') && color.hasOwnProperty('s') && color.hasOwnProperty('l')) {
          color.s = convertToPercentage(color.s)
          color.l = convertToPercentage(color.l)
          rgb = hslToRgb(color.h, color.s, color.l)
          ok = true
          format = 'hsl'
        }

        if (color.hasOwnProperty('a')) {
          a = color.a
        }
      }

      a = boundAlpha(a)

      return {
        ok: ok,
        format: color.format || format,
        r: mathMin(255, mathMax(rgb.r, 0)),
        g: mathMin(255, mathMax(rgb.g, 0)),
        b: mathMin(255, mathMax(rgb.b, 0)),
        a: a
      }
    }

    // Conversion Functions
    // --------------------

    // `rgbToHsl`, `rgbToHsv`, `hslToRgb`, `hsvToRgb` modified from:
    // <http://mjijackson.com/2008/02/rgb-to-hsl-and-rgb-to-hsv-color-model-conversion-algorithms-in-javascript>

    // `rgbToRgb`
    // Handle bounds / percentage checking to conform to CSS color spec
    // <http://www.w3.org/TR/css3-color/>
    // *Assumes:* r, g, b in [0, 255] or [0, 1]
    // *Returns:* { r, g, b } in [0, 255]
    function rgbToRgb (r, g, b) {
      return {
        r: bound01(r, 255) * 255,
        g: bound01(g, 255) * 255,
        b: bound01(b, 255) * 255
      }
    }

    // `rgbToHsl`
    // Converts an RGB color value to HSL.
    // *Assumes:* r, g, and b are contained in [0, 255] or [0, 1]
    // *Returns:* { h, s, l } in [0,1]
    function rgbToHsl (r, g, b) {
      r = bound01(r, 255)
      g = bound01(g, 255)
      b = bound01(b, 255)

      var max = mathMax(r, g, b); var min = mathMin(r, g, b)
      var h; var s; var l = (max + min) / 2

      if (max == min) {
        h = s = 0 // achromatic
      } else {
        var d = max - min
        s = l > 0.5 ? d / (2 - max - min) : d / (max + min)
        switch (max) {
          case r: h = (g - b) / d + (g < b ? 6 : 0); break
          case g: h = (b - r) / d + 2; break
          case b: h = (r - g) / d + 4; break
        }

        h /= 6
      }

      return { h: h, s: s, l: l }
    }

    // `hslToRgb`
    // Converts an HSL color value to RGB.
    // *Assumes:* h is contained in [0, 1] or [0, 360] and s and l are contained [0, 1] or [0, 100]
    // *Returns:* { r, g, b } in the set [0, 255]
    function hslToRgb (h, s, l) {
      var r, g, b

      h = bound01(h, 360)
      s = bound01(s, 100)
      l = bound01(l, 100)

      function hue2rgb (p, q, t) {
        if (t < 0) t += 1
        if (t > 1) t -= 1
        if (t < 1 / 6) return p + (q - p) * 6 * t
        if (t < 1 / 2) return q
        if (t < 2 / 3) return p + (q - p) * (2 / 3 - t) * 6
        return p
      }

      if (s === 0) {
        r = g = b = l // achromatic
      } else {
        var q = l < 0.5 ? l * (1 + s) : l + s - l * s
        var p = 2 * l - q
        r = hue2rgb(p, q, h + 1 / 3)
        g = hue2rgb(p, q, h)
        b = hue2rgb(p, q, h - 1 / 3)
      }

      return { r: r * 255, g: g * 255, b: b * 255 }
    }

    // `rgbToHsv`
    // Converts an RGB color value to HSV
    // *Assumes:* r, g, and b are contained in the set [0, 255] or [0, 1]
    // *Returns:* { h, s, v } in [0,1]
    function rgbToHsv (r, g, b) {
      r = bound01(r, 255)
      g = bound01(g, 255)
      b = bound01(b, 255)

      var max = mathMax(r, g, b); var min = mathMin(r, g, b)
      var h; var s; var v = max

      var d = max - min
      s = max === 0 ? 0 : d / max

      if (max == min) {
        h = 0 // achromatic
      } else {
        switch (max) {
          case r: h = (g - b) / d + (g < b ? 6 : 0); break
          case g: h = (b - r) / d + 2; break
          case b: h = (r - g) / d + 4; break
        }
        h /= 6
      }
      return { h: h, s: s, v: v }
    }

    // `hsvToRgb`
    // Converts an HSV color value to RGB.
    // *Assumes:* h is contained in [0, 1] or [0, 360] and s and v are contained in [0, 1] or [0, 100]
    // *Returns:* { r, g, b } in the set [0, 255]
    function hsvToRgb (h, s, v) {
      h = bound01(h, 360) * 6
      s = bound01(s, 100)
      v = bound01(v, 100)

      var i = math.floor(h)
      var f = h - i
      var p = v * (1 - s)
      var q = v * (1 - f * s)
      var t = v * (1 - (1 - f) * s)
      var mod = i % 6
      var r = [v, q, p, p, t, v][mod]
      var g = [t, v, v, q, p, p][mod]
      var b = [p, p, t, v, v, q][mod]

      return { r: r * 255, g: g * 255, b: b * 255 }
    }

    // `rgbToHex`
    // Converts an RGB color to hex
    // Assumes r, g, and b are contained in the set [0, 255]
    // Returns a 3 or 6 character hex
    function rgbToHex (r, g, b, allow3Char) {
      var hex = [
        pad2(mathRound(r).toString(16)),
        pad2(mathRound(g).toString(16)),
        pad2(mathRound(b).toString(16))
      ]

      // Return a 3 character hex if possible
      if (allow3Char && hex[0].charAt(0) == hex[0].charAt(1) && hex[1].charAt(0) == hex[1].charAt(1) && hex[2].charAt(0) == hex[2].charAt(1)) {
        return hex[0].charAt(0) + hex[1].charAt(0) + hex[2].charAt(0)
      }

      return hex.join('')
    }
    // `rgbaToHex`
    // Converts an RGBA color plus alpha transparency to hex
    // Assumes r, g, b and a are contained in the set [0, 255]
    // Returns an 8 character hex
    function rgbaToHex (r, g, b, a) {
      var hex = [
        pad2(convertDecimalToHex(a)),
        pad2(mathRound(r).toString(16)),
        pad2(mathRound(g).toString(16)),
        pad2(mathRound(b).toString(16))
      ]

      return hex.join('')
    }

    // `equals`
    // Can be called with any tinycolor input
    tinycolor.equals = function (color1, color2) {
      if (!color1 || !color2) { return false }
      return tinycolor(color1).toRgbString() == tinycolor(color2).toRgbString()
    }
    tinycolor.random = function () {
      return tinycolor.fromRatio({
        r: mathRandom(),
        g: mathRandom(),
        b: mathRandom()
      })
    }

    // Modification Functions
    // ----------------------
    // Thanks to less.js for some of the basics here
    // <https://github.com/cloudhead/less.js/blob/master/lib/less/functions.js>

    function desaturate (color, amount) {
      amount = (amount === 0) ? 0 : (amount || 10)
      var hsl = tinycolor(color).toHsl()
      hsl.s -= amount / 100
      hsl.s = clamp01(hsl.s)
      return tinycolor(hsl)
    }

    function saturate (color, amount) {
      amount = (amount === 0) ? 0 : (amount || 10)
      var hsl = tinycolor(color).toHsl()
      hsl.s += amount / 100
      hsl.s = clamp01(hsl.s)
      return tinycolor(hsl)
    }

    function greyscale (color) {
      return tinycolor(color).desaturate(100)
    }

    function lighten (color, amount) {
      amount = (amount === 0) ? 0 : (amount || 10)
      var hsl = tinycolor(color).toHsl()
      hsl.l += amount / 100
      hsl.l = clamp01(hsl.l)
      return tinycolor(hsl)
    }

    function brighten (color, amount) {
      amount = (amount === 0) ? 0 : (amount || 10)
      var rgb = tinycolor(color).toRgb()
      rgb.r = mathMax(0, mathMin(255, rgb.r - mathRound(255 * -(amount / 100))))
      rgb.g = mathMax(0, mathMin(255, rgb.g - mathRound(255 * -(amount / 100))))
      rgb.b = mathMax(0, mathMin(255, rgb.b - mathRound(255 * -(amount / 100))))
      return tinycolor(rgb)
    }

    function darken (color, amount) {
      amount = (amount === 0) ? 0 : (amount || 10)
      var hsl = tinycolor(color).toHsl()
      hsl.l -= amount / 100
      hsl.l = clamp01(hsl.l)
      return tinycolor(hsl)
    }

    // Spin takes a positive or negative amount within [-360, 360] indicating the change of hue.
    // Values outside of this range will be wrapped into this range.
    function spin (color, amount) {
      var hsl = tinycolor(color).toHsl()
      var hue = (mathRound(hsl.h) + amount) % 360
      hsl.h = hue < 0 ? 360 + hue : hue
      return tinycolor(hsl)
    }

    // Combination Functions
    // ---------------------
    // Thanks to jQuery xColor for some of the ideas behind these
    // <https://github.com/infusion/jQuery-xcolor/blob/master/jquery.xcolor.js>

    function complement (color) {
      var hsl = tinycolor(color).toHsl()
      hsl.h = (hsl.h + 180) % 360
      return tinycolor(hsl)
    }

    function triad (color) {
      var hsl = tinycolor(color).toHsl()
      var h = hsl.h
      return [
        tinycolor(color),
        tinycolor({ h: (h + 120) % 360, s: hsl.s, l: hsl.l }),
        tinycolor({ h: (h + 240) % 360, s: hsl.s, l: hsl.l })
      ]
    }

    function tetrad (color) {
      var hsl = tinycolor(color).toHsl()
      var h = hsl.h
      return [
        tinycolor(color),
        tinycolor({ h: (h + 90) % 360, s: hsl.s, l: hsl.l }),
        tinycolor({ h: (h + 180) % 360, s: hsl.s, l: hsl.l }),
        tinycolor({ h: (h + 270) % 360, s: hsl.s, l: hsl.l })
      ]
    }

    function splitcomplement (color) {
      var hsl = tinycolor(color).toHsl()
      var h = hsl.h
      return [
        tinycolor(color),
        tinycolor({ h: (h + 72) % 360, s: hsl.s, l: hsl.l }),
        tinycolor({ h: (h + 216) % 360, s: hsl.s, l: hsl.l })
      ]
    }

    function analogous (color, results, slices) {
      results = results || 6
      slices = slices || 30

      var hsl = tinycolor(color).toHsl()
      var part = 360 / slices
      var ret = [tinycolor(color)]

      for (hsl.h = ((hsl.h - (part * results >> 1)) + 720) % 360; --results;) {
        hsl.h = (hsl.h + part) % 360
        ret.push(tinycolor(hsl))
      }
      return ret
    }

    function monochromatic (color, results) {
      results = results || 6
      var hsv = tinycolor(color).toHsv()
      var h = hsv.h; var s = hsv.s; var v = hsv.v
      var ret = []
      var modification = 1 / results

      while (results--) {
        ret.push(tinycolor({ h: h, s: s, v: v }))
        v = (v + modification) % 1
      }

      return ret
    }

    // Utility Functions
    // ---------------------

    tinycolor.mix = function (color1, color2, amount) {
      amount = (amount === 0) ? 0 : (amount || 50)

      var rgb1 = tinycolor(color1).toRgb()
      var rgb2 = tinycolor(color2).toRgb()

      var p = amount / 100
      var w = p * 2 - 1
      var a = rgb2.a - rgb1.a

      var w1

      if (w * a == -1) {
        w1 = w
      } else {
        w1 = (w + a) / (1 + w * a)
      }

      w1 = (w1 + 1) / 2

      var w2 = 1 - w1

      var rgba = {
        r: rgb2.r * w1 + rgb1.r * w2,
        g: rgb2.g * w1 + rgb1.g * w2,
        b: rgb2.b * w1 + rgb1.b * w2,
        a: rgb2.a * p + rgb1.a * (1 - p)
      }

      return tinycolor(rgba)
    }

    // Readability Functions
    // ---------------------
    // <http://www.w3.org/TR/AERT#color-contrast>

    // `readability`
    // Analyze the 2 colors and returns an object with the following properties:
    //    `brightness`: difference in brightness between the two colors
    //    `color`: difference in color/hue between the two colors
    tinycolor.readability = function (color1, color2) {
      var c1 = tinycolor(color1)
      var c2 = tinycolor(color2)
      var rgb1 = c1.toRgb()
      var rgb2 = c2.toRgb()
      var brightnessA = c1.getBrightness()
      var brightnessB = c2.getBrightness()
      var colorDiff = (
        Math.max(rgb1.r, rgb2.r) - Math.min(rgb1.r, rgb2.r) +
            Math.max(rgb1.g, rgb2.g) - Math.min(rgb1.g, rgb2.g) +
            Math.max(rgb1.b, rgb2.b) - Math.min(rgb1.b, rgb2.b)
      )

      return {
        brightness: Math.abs(brightnessA - brightnessB),
        color: colorDiff
      }
    }

    // `readable`
    // http://www.w3.org/TR/AERT#color-contrast
    // Ensure that foreground and background color combinations provide sufficient contrast.
    // *Example*
    //    tinycolor.isReadable("#000", "#111") => false
    tinycolor.isReadable = function (color1, color2) {
      var readability = tinycolor.readability(color1, color2)
      return readability.brightness > 125 && readability.color > 500
    }

    // `mostReadable`
    // Given a base color and a list of possible foreground or background
    // colors for that base, returns the most readable color.
    // *Example*
    //    tinycolor.mostReadable("#123", ["#fff", "#000"]) => "#000"
    tinycolor.mostReadable = function (baseColor, colorList) {
      var bestColor = null
      var bestScore = 0
      var bestIsReadable = false
      for (var i = 0; i < colorList.length; i++) {
        // We normalize both around the "acceptable" breaking point,
        // but rank brightness constrast higher than hue.

        var readability = tinycolor.readability(baseColor, colorList[i])
        var readable = readability.brightness > 125 && readability.color > 500
        var score = 3 * (readability.brightness / 125) + (readability.color / 500)

        if ((readable && !bestIsReadable) ||
                (readable && bestIsReadable && score > bestScore) ||
                ((!readable) && (!bestIsReadable) && score > bestScore)) {
          bestIsReadable = readable
          bestScore = score
          bestColor = tinycolor(colorList[i])
        }
      }
      return bestColor
    }

    // Big List of Colors
    // ------------------
    // <http://www.w3.org/TR/css3-color/#svg-color>
    var names = tinycolor.names = {
      aliceblue: 'f0f8ff',
      antiquewhite: 'faebd7',
      aqua: '0ff',
      aquamarine: '7fffd4',
      azure: 'f0ffff',
      beige: 'f5f5dc',
      bisque: 'ffe4c4',
      black: '000',
      blanchedalmond: 'ffebcd',
      blue: '00f',
      blueviolet: '8a2be2',
      brown: 'a52a2a',
      burlywood: 'deb887',
      burntsienna: 'ea7e5d',
      cadetblue: '5f9ea0',
      chartreuse: '7fff00',
      chocolate: 'd2691e',
      coral: 'ff7f50',
      cornflowerblue: '6495ed',
      cornsilk: 'fff8dc',
      crimson: 'dc143c',
      cyan: '0ff',
      darkblue: '00008b',
      darkcyan: '008b8b',
      darkgoldenrod: 'b8860b',
      darkgray: 'a9a9a9',
      darkgreen: '006400',
      darkgrey: 'a9a9a9',
      darkkhaki: 'bdb76b',
      darkmagenta: '8b008b',
      darkolivegreen: '556b2f',
      darkorange: 'ff8c00',
      darkorchid: '9932cc',
      darkred: '8b0000',
      darksalmon: 'e9967a',
      darkseagreen: '8fbc8f',
      darkslateblue: '483d8b',
      darkslategray: '2f4f4f',
      darkslategrey: '2f4f4f',
      darkturquoise: '00ced1',
      darkviolet: '9400d3',
      deeppink: 'ff1493',
      deepskyblue: '00bfff',
      dimgray: '696969',
      dimgrey: '696969',
      dodgerblue: '1e90ff',
      firebrick: 'b22222',
      floralwhite: 'fffaf0',
      forestgreen: '228b22',
      fuchsia: 'f0f',
      gainsboro: 'dcdcdc',
      ghostwhite: 'f8f8ff',
      gold: 'ffd700',
      goldenrod: 'daa520',
      gray: '808080',
      green: '008000',
      greenyellow: 'adff2f',
      grey: '808080',
      honeydew: 'f0fff0',
      hotpink: 'ff69b4',
      indianred: 'cd5c5c',
      indigo: '4b0082',
      ivory: 'fffff0',
      khaki: 'f0e68c',
      lavender: 'e6e6fa',
      lavenderblush: 'fff0f5',
      lawngreen: '7cfc00',
      lemonchiffon: 'fffacd',
      lightblue: 'add8e6',
      lightcoral: 'f08080',
      lightcyan: 'e0ffff',
      lightgoldenrodyellow: 'fafad2',
      lightgray: 'd3d3d3',
      lightgreen: '90ee90',
      lightgrey: 'd3d3d3',
      lightpink: 'ffb6c1',
      lightsalmon: 'ffa07a',
      lightseagreen: '20b2aa',
      lightskyblue: '87cefa',
      lightslategray: '789',
      lightslategrey: '789',
      lightsteelblue: 'b0c4de',
      lightyellow: 'ffffe0',
      lime: '0f0',
      limegreen: '32cd32',
      linen: 'faf0e6',
      magenta: 'f0f',
      maroon: '800000',
      mediumaquamarine: '66cdaa',
      mediumblue: '0000cd',
      mediumorchid: 'ba55d3',
      mediumpurple: '9370db',
      mediumseagreen: '3cb371',
      mediumslateblue: '7b68ee',
      mediumspringgreen: '00fa9a',
      mediumturquoise: '48d1cc',
      mediumvioletred: 'c71585',
      midnightblue: '191970',
      mintcream: 'f5fffa',
      mistyrose: 'ffe4e1',
      moccasin: 'ffe4b5',
      navajowhite: 'ffdead',
      navy: '000080',
      oldlace: 'fdf5e6',
      olive: '808000',
      olivedrab: '6b8e23',
      orange: 'ffa500',
      orangered: 'ff4500',
      orchid: 'da70d6',
      palegoldenrod: 'eee8aa',
      palegreen: '98fb98',
      paleturquoise: 'afeeee',
      palevioletred: 'db7093',
      papayawhip: 'ffefd5',
      peachpuff: 'ffdab9',
      peru: 'cd853f',
      pink: 'ffc0cb',
      plum: 'dda0dd',
      powderblue: 'b0e0e6',
      purple: '800080',
      red: 'f00',
      rosybrown: 'bc8f8f',
      royalblue: '4169e1',
      saddlebrown: '8b4513',
      salmon: 'fa8072',
      sandybrown: 'f4a460',
      seagreen: '2e8b57',
      seashell: 'fff5ee',
      sienna: 'a0522d',
      silver: 'c0c0c0',
      skyblue: '87ceeb',
      slateblue: '6a5acd',
      slategray: '708090',
      slategrey: '708090',
      snow: 'fffafa',
      springgreen: '00ff7f',
      steelblue: '4682b4',
      tan: 'd2b48c',
      teal: '008080',
      thistle: 'd8bfd8',
      tomato: 'ff6347',
      turquoise: '40e0d0',
      violet: 'ee82ee',
      wheat: 'f5deb3',
      white: 'fff',
      whitesmoke: 'f5f5f5',
      yellow: 'ff0',
      yellowgreen: '9acd32'
    }

    // Make it easy to access colors via `hexNames[hex]`
    var hexNames = tinycolor.hexNames = flip(names)

    // Utilities
    // ---------

    // `{ 'name1': 'val1' }` becomes `{ 'val1': 'name1' }`
    function flip (o) {
      var flipped = { }
      for (var i in o) {
        if (o.hasOwnProperty(i)) {
          flipped[o[i]] = i
        }
      }
      return flipped
    }

    // Return a valid alpha value [0,1] with all invalid values being set to 1
    function boundAlpha (a) {
      a = parseFloat(a)

      if (isNaN(a) || a < 0 || a > 1) {
        a = 1
      }

      return a
    }

    // Take input from [0, n] and return it as [0, 1]
    function bound01 (n, max) {
      if (isOnePointZero(n)) { n = '100%' }

      var processPercent = isPercentage(n)
      n = mathMin(max, mathMax(0, parseFloat(n)))

      // Automatically convert percentage into number
      if (processPercent) {
        n = parseInt(n * max, 10) / 100
      }

      // Handle floating point rounding errors
      if ((math.abs(n - max) < 0.000001)) {
        return 1
      }

      // Convert into [0, 1] range if it isn't already
      return (n % max) / parseFloat(max)
    }

    // Force a number between 0 and 1
    function clamp01 (val) {
      return mathMin(1, mathMax(0, val))
    }

    // Parse a base-16 hex value into a base-10 integer
    function parseIntFromHex (val) {
      return parseInt(val, 16)
    }

    // Need to handle 1.0 as 100%, since once it is a number, there is no difference between it and 1
    // <http://stackoverflow.com/questions/7422072/javascript-how-to-detect-number-as-a-decimal-including-1-0>
    function isOnePointZero (n) {
      return typeof n === 'string' && n.indexOf('.') != -1 && parseFloat(n) === 1
    }

    // Check to see if string passed in is a percentage
    function isPercentage (n) {
      return typeof n === 'string' && n.indexOf('%') != -1
    }

    // Force a hex value to have 2 characters
    function pad2 (c) {
      return c.length == 1 ? '0' + c : '' + c
    }

    // Replace a decimal with it's percentage value
    function convertToPercentage (n) {
      if (n <= 1) {
        n = (n * 100) + '%'
      }

      return n
    }

    // Converts a decimal to a hex value
    function convertDecimalToHex (d) {
      return Math.round(parseFloat(d) * 255).toString(16)
    }
    // Converts a hex value to a decimal
    function convertHexToDecimal (h) {
      return (parseIntFromHex(h) / 255)
    }

    var matchers = (function () {
      // <http://www.w3.org/TR/css3-values/#integers>
      var CSS_INTEGER = '[-\\+]?\\d+%?'

      // <http://www.w3.org/TR/css3-values/#number-value>
      var CSS_NUMBER = '[-\\+]?\\d*\\.\\d+%?'

      // Allow positive/negative integer/number.  Don't capture the either/or, just the entire outcome.
      var CSS_UNIT = '(?:' + CSS_NUMBER + ')|(?:' + CSS_INTEGER + ')'

      // Actual matching.
      // Parentheses and commas are optional, but not required.
      // Whitespace can take the place of commas or opening paren
      var PERMISSIVE_MATCH3 = '[\\s|\\(]+(' + CSS_UNIT + ')[,|\\s]+(' + CSS_UNIT + ')[,|\\s]+(' + CSS_UNIT + ')\\s*\\)?'
      var PERMISSIVE_MATCH4 = '[\\s|\\(]+(' + CSS_UNIT + ')[,|\\s]+(' + CSS_UNIT + ')[,|\\s]+(' + CSS_UNIT + ')[,|\\s]+(' + CSS_UNIT + ')\\s*\\)?'

      return {
        rgb: new RegExp('rgb' + PERMISSIVE_MATCH3),
        rgba: new RegExp('rgba' + PERMISSIVE_MATCH4),
        hsl: new RegExp('hsl' + PERMISSIVE_MATCH3),
        hsla: new RegExp('hsla' + PERMISSIVE_MATCH4),
        hsv: new RegExp('hsv' + PERMISSIVE_MATCH3),
        hex3: /^([0-9a-fA-F]{1})([0-9a-fA-F]{1})([0-9a-fA-F]{1})$/,
        hex6: /^([0-9a-fA-F]{2})([0-9a-fA-F]{2})([0-9a-fA-F]{2})$/,
        hex8: /^([0-9a-fA-F]{2})([0-9a-fA-F]{2})([0-9a-fA-F]{2})([0-9a-fA-F]{2})$/
      }
    })()

    // `stringInputToObject`
    // Permissive string parsing.  Take in a number of formats, and output an object
    // based on detected format.  Returns `{ r, g, b }` or `{ h, s, l }` or `{ h, s, v}`
    function stringInputToObject (color) {
      color = color.replace(trimLeft, '').replace(trimRight, '').toLowerCase()
      var named = false
      if (names[color]) {
        color = names[color]
        named = true
      } else if (color == 'transparent') {
        return { r: 0, g: 0, b: 0, a: 0, format: 'name' }
      }

      // Try to match string input using regular expressions.
      // Keep most of the number bounding out of this function - don't worry about [0,1] or [0,100] or [0,360]
      // Just return an object and let the conversion functions handle that.
      // This way the result will be the same whether the tinycolor is initialized with string or object.
      var match
      if ((match = matchers.rgb.exec(color))) {
        return { r: match[1], g: match[2], b: match[3] }
      }
      if ((match = matchers.rgba.exec(color))) {
        return { r: match[1], g: match[2], b: match[3], a: match[4] }
      }
      if ((match = matchers.hsl.exec(color))) {
        return { h: match[1], s: match[2], l: match[3] }
      }
      if ((match = matchers.hsla.exec(color))) {
        return { h: match[1], s: match[2], l: match[3], a: match[4] }
      }
      if ((match = matchers.hsv.exec(color))) {
        return { h: match[1], s: match[2], v: match[3] }
      }
      if ((match = matchers.hex8.exec(color))) {
        return {
          a: convertHexToDecimal(match[1]),
          r: parseIntFromHex(match[2]),
          g: parseIntFromHex(match[3]),
          b: parseIntFromHex(match[4]),
          format: named ? 'name' : 'hex8'
        }
      }
      if ((match = matchers.hex6.exec(color))) {
        return {
          r: parseIntFromHex(match[1]),
          g: parseIntFromHex(match[2]),
          b: parseIntFromHex(match[3]),
          format: named ? 'name' : 'hex'
        }
      }
      if ((match = matchers.hex3.exec(color))) {
        return {
          r: parseIntFromHex(match[1] + '' + match[1]),
          g: parseIntFromHex(match[2] + '' + match[2]),
          b: parseIntFromHex(match[3] + '' + match[3]),
          format: named ? 'name' : 'hex'
        }
      }

      return false
    }

    window.tinycolor = tinycolor
  })()

  $(function () {
    if ($.fn.spectrum.load) {
      $.fn.spectrum.processNativeColorInputs()
    }
  })
})(window, jQuery)
